Urethane Spring [Overview]
Pressure Source Components■ Application Example［Type X&A］
Urethane spring USA and USX for

For operation with single stage springpress tools use polyester based casthd8

urethane elastomer which is heat

Guide Pin

hd4

resistant. It is excellent in repeatedShoulder Bolt

compression. It also has high impact

Stepped Bushinghd10

resilience, impact resistance, weather
resistance, and load resistance. It is

hd3

hd1

the optimum product for pad pressure

Retainerhd2

source of press tools.
R■ Features・Since material is hard and elastic, it is excellent in impact resistance and shows a strong
performance as a spring.
Material Characteristics

Performance Values

MaterialPolyester Based

For operation with double stage spring
DETAIL R

Shore A90°
HRS45°

ColorWasher

Navy blue

Tensile Strength
Modulushd6

59 MPa100％

7.53 MPa300％

15.2 MPa

hd7
Pressure Source
Components

Hardness

hd5

Elongation

510%

Tensile Strength

109 N/mm

Impact Resistance

28%

hd9

■Range of Application

Dimension Table (mm) [Type A]

USA

Deflection Rate
Limit for Operation
25%

SPM
Limit for Operation
50SPM

USX

30%

40SPM

Ambient Temperature
Limit for Operation
50℃Specification limit SPM varies depending on the deflection ratio. Please contact our sales representatives for details.

Urethane Spring

Guide PinWasherOthers

H d1

Hd 2

Hd 3

Hd4

Hd 5

Hd 6

Hd7

Hd 8

Hd 9

USA4040

1448

12M1065131468

Hd1060

USA80

80

2296

18

M161002122116100

For USX, use guide pin h12 for urethane diameter h50 or smaller and h18 for urethane diameter h60 or larger.

■Storage・In order to protect against ultraviolet rays, store away from direct sunlight.
・Deterioration is faster under conditions of high temperature or humidity.
We recommend putting a desiccant in the container and storing in as cool a location as possible.
For use under high temperature and humidity conditions, we recommend URESTORO (P.1171),which has excellent hydrolysis performance.
1151

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■ Conditions for Use
・Use at or below the stated deflection ratio.
・The urethane spring seating surface requires an external diameter of > 20 mm.
・The clearance around each spring must be sufficient to prevent any contact with theneighboring components.
・Exposure to ultraviolet and sunlight must be avoided.
・Guide pins should be S25C equivalent or better and finished within Ra1.6.

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

1152

Urethane SpringHigh Load X Type

Pressure Source Components
USX

Catalog No.

hD
hd

D

Load F [kN]

S

50
60

hV

USX
USXT
L

80
100hD+20hV+20L(actual size)

S＝Lx20％

S＝Lx25％S

F [kN]S

F [kN]S

F [kN]

V

60 ( 62)80 ( 82)
60 ( 62)80 ( 82)
80 ( 82)
100 (103)
80 ( 82)
100 (103)
120 (123)12.4

7.5

15.5

9.4

18.6

1357

16.4

6.5

20.5

8.8

24.6

1358

12.4

10.0

15.5

13.5

18.6

20

16.4

10.0

20.5

13.4

24.6

18

16.4

19.0

20.5

26.0

24.6

38

20.6

20.0

25.8

28.0

30.9

42

16.4

31.0

20.5

42.0

24.6

63

20.6

30.0

25.8

42.0

30.9

60

24.6

27.0

30.8

37.0

36.9

57

Catalog No.

DL

USX
USXT

5080

6080

S=Lx30%

d1470
92

20114

Refer to page 1192 for the spacer for stack use of springs.

USXT (with Retainer)

Pressure Source
Components

For guide pin, use h12 for urethane diameter h50 or smaller and h18 for urethane diameter h60 or larger.

SORTA (Retainer)〈Material〉Polyester based

1161

Refer to page 1191 for attached retainer size.

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

1162

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

Urethane Spring

USX Load-Deflection Diagrams
Pressure Source Components
Initial100,000 Strokes

USX50-60

USX50-80

USX80-80

USX80-100

16164045

300,000 Strokes

408353024

Load (kN)

8Load (kN)

12Load (kN)

Load (kN)

1232

1625
201544108536912151804

Deflection (mm)81216
Deflection (mm)200244812162024020206060

16165050

8844036912

Deflection (mm)15180481216204030

1010481216202530253030202024

Deflection (mm)Deflection (mm)154020024

Load (kN)70

Load (kN)

USX100-10070

Load (kN)

USX100-80

24Load (kN)

USX60-80

241210

Deflection (mm)USX60-60

125

Deflection (mm)05101520

Pressure Source
Components

0Deflection (mm)USX100-120
7060

Load (kN)

5040302010061218243036

Deflection (mm)1163

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Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

1164

hD
hd1＋0.5
0Retainer, Spacer
Pressure Source Components
SORTA

KK (Retainer)

hd ＋ 0.1
0L2＋ 1.0

hd2

LCatalog No.

H＋ 0.5H− 00.5hD

hd
115°
L1T

hD1T

R2

L45°

hd − 00.3〈Material〉SS400 or S25C

NominalL

141020SORTA

D16302022223524d913

Catalog No.

Nominal

LSORTA

2030

L1L22337510

Applicable Rubber Spring, Urethane Spring
Outer Diameter

Length30, 40〜4030n63

hd2〈Material〉SS400

Catalog No.

Nominal

D1K

101219.5

15221850n63dd2

HT111251320

660n12560n60n120

Catalog No.

Nominal70n10060n200K

10SOIS
1C2-

3

10hD2

hdhD

hD1

5hd0.

C

Pressure Source
Components

2-SORTB

10hD〈Material〉Neodel(#25-61N)

730〈Material〉SS400 or S25C

Catalog No.

NominalD

D1

D2dOuter Diameter

SORTB

1422191314950632720221380100

When installing SORTB, set the straight part to the fixed surface side.

Catalog No.

Nominal

D65SOIS50638010080100125d1321

Applicable Rubber Spring, Urethane Spring
Outer Diameter
3040606370809010050

Inner Diameter

Guide Pin Diameter

141220110

2220

Guide pins should be S25C equivalent or better and finished within Ra1.6.

Catalog No.

NominalCatalog No.

NominalSORTB

14SOIS

631191

1192

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.